TITLE:
Physical and Mechanical Characteristics of Ash Concrete from Palm Nut Shells: Pouzzolanic Effect
AUTHORS:
Serifou Mamery Adama, Jolissaint Obre Sery Paul, Ouattara Souleymane, Emeruwa Edjikémé
KEYWORDS:
Recycled Concrete, Lvegetable Matter, Mechanical and Physical Properties
JOURNAL NAME:
Open Journal of Applied Sciences,
Vol.12 No.10,
October
18,
2022
ABSTRACT: The use of agricultural waste in construction is an advantage favorable
to environmental sanitation, the preservation of non-renewable resources but
also to the execution of an ecological work. The objective of this work is to
study the influence of the addition of palm nut cockles ash as an adjuvant on
the physico-mechanical properties of concrete. For this study, ordinary
concretes and ash concretes were made and subjected to physical and mechanical
characterization tests at different maturation periods. The results of the
tests carried out indicate that the presence of ash reduces the workability and
porosity of the concrete and then increases the density of the concrete to
6.3%. In addition, we found that incorporating the ash improves the mechanical
strength of the concrete compared to the control concrete. Thus, the
compressive strength of ash concrete is 32.07 MPa and that of splitting is 2.76
MPa at 28 days, which is satisfactory vis-à-vis the threshold of construction
projects for ready concrete for use, which recommends a minimum of 25 MPa
(compression) and 2.6 MPa (splitting) at 28 days. This improvement in
mechanical performance can be attributed to the pozzolanic effect of the
constituents of the ash. Therefore, the ash from palm nut shells can be used to
improve the mechanical properties of concrete.